My ambient temp is 75 also. I run a lancool pc-k62 with 140 in the front (2)140's on top and (1)120 in the rear... so airflow is not the prob. I'm wondering why some people are getting better numbers then others.

My ambient temp is 75 also. I run a lancool pc-k62 with 140 in the front (2)140's on top and (1)120 in the rear... so airflow is not the prob. I'm wondering why some people are getting better numbers then others.

I put an Antec Spot fan at the back of the cards (where the power connectors are) as well as 2 x 60MM above the mounting brackets on the back of the case. This ensures a clean airflow over the cards and makes sure that the hot air is being evacuated.

Is the back of your case free of obstruction etc (not too close to the wall etc)?

This is my FurMark burn test at 800/1000 OC. My first card gets ridiculously hot, because my motherboard forces the two cards right up against each other. Although its back down to 50/36 at idle now. I rarely ever see temps go above 80C while doing normal gaming though, or in Unigine or 3DMark.